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Publication numberUS1013737 A
Publication typeGrant
Publication dateJan 2, 1912
Filing dateDec 27, 1909
Priority dateDec 27, 1909
Publication numberUS 1013737 A, US 1013737A, US-A-1013737, US1013737 A, US1013737A
InventorsLewis W Brown
Original AssigneeFrank D Bozarth, Lewis W Brown
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1013737 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)



1 91 3 731 Patented Jan. 2, 1912.




Specification of Letters Patent.

Application filed December 27, 1909.

Patented Jan. 2, 1912.

Serial No. 535,073.

To all whom it may concern:

Be it known that I, Lewis W. BROWN, a citizen of the United States, residing at Berkley, in the county of Norfolk and State of Virginia, have invented certain new and useful Improvements in Transmission- Gears; and I do hereby declare the following to be a full, clear, and exact descrlption of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to transmission gears, and has for an object to provide a friction gear for transmitting motlon having improved means for varying the transmitted speed and also for reversing and varying the speed.

A further object of the invention is to provide a friction gear capable of reversing in variation as above specified and also capable of transmitting motion to a shaft out of alinement with the driven shaft.

A further object of the invention is to provide improved means for throwing the transmission gear out of engagement.

With these and other objects in view, the invention comprises certain novel constructions, combinations and arrangements of parts, as will be hereinafter fully described and claimed.

In the drawings :-Figure 1 is a view in side elevation of the present invention shown in association with a conventional motor and propeller. Fig. 2 is a top plan view of the device as shown at Fig. 1.

Like characters of reference designate corresponding parts throughout the several v1ews.

A shaft 10 is journaled in any approved manner as in the journal box 11 and is driven by any approved means as the motor shown conventionally at 12. The shaft 10 carries a friction disk 13 having its plane per endicular to the shaft and preferably hel against end thrust by the journal box 11.

Spaced from the disk 13 a shaft 14 is j ournaled at right angles to the shaft 10 and is provided with a friction disk 15 adapted to move longitudinally upon the shaft 14 but held from rotary movement thereon by any usually employed means. To move the friction disk slidably upon the shaft 14 a collar 16 is rigidly connected with the disk 15 and engaged by links 17 carried by a lever 18. It will be apparent that as the lever 18 is manipulated the disk 15 will be slidable along upon the shaft 14 and as the disk approaches to the center of the disk 13, with which it is in frictional engagement, the speed at which the disk 15 is rotated will be decreased until upon reaching the center, rotary motion will be stopped only to be begun again in the reverse direction as the disk 15 is moved beyond the center of the disk 13 in the direction indicated by the arrow. It will thus be apparent that by the simple manipulation of the single lever 18 the speed of rotation of the disk 15 may be increased, decreased or reversed.

Mounted rigidly upon the shaft 14 is a disk 19 not in engagement with the disk 13 but in engagement with a disk 20 carried upon a shaft 21. As the shaft 14 rotates with the disk 15 it will be apparent that the disk 19 is rotated therewith, and that when in frictional engagement with the disk 20, such disk 20 and its shaft 21 will also be rotated.

The shaft 21 is journaled in the journal box 22 in which it is longitudinally slidable and is controlled by a lever 23 having a collar 24 in which such shaft rotates. The lever 24 is provided with a spring-pressed pawl 25 positioned to engage a segment 26 so that the disk 20 may be moved away from the disk 19 or moved into engagement with such disk and the pressure of the disks 19 and 20 increased or decreased at will. As shown and illustrated in the drawing a shaft 21 carries a conventional propeller 27 it being understood, however, that such propeller is shown only to illustrate the means of applying power, and that the utility of the device is not limited to operating a propeller but is intended to operate any mechanical parts.

What I claim is 1. In a transmission mechanism shafts journaled in the same plane, disks carried at the ends of the shafts and spaced apart, one of said disks being of greater diameter than the other, a shaft journaled transversely between the disks, a disk carried rigidly by the transverse shaft and engaging the larger disk adjacent its periphery, and a disk carried by and longitudinally movable upon the transverse shaft, such movement being diametrically upon and. across the center of the smaller disk.

2. In a transmission mechanism, shafts mounted inthe same plane, one of which is positively driven, disks carried at the extremities of the shafts and spaced apart, a shaft journaled transversely between the disks, a disk carried rigidly by the shaft in engagement with one of the first mentioned disks and a disk slidable upon the transverse shaft between and in engagement with the other of said first mentioned disks.

3. In a transmission gear, spaced disks, a shaft journaled between the disks, a disk carried rigidly by the shaft engaging one of the first mentioned disks and a disk slidable upon the shaft between and engaging the other of said first mentioned disks.

In testimony whereof I aflix my signature in presence of two witnesses.



Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4177683 *Sep 19, 1977Dec 11, 1979Darmo CorporationPower transmission mechanism
U.S. Classification476/24, 476/32
Cooperative ClassificationF16H15/10